Abstract:
:The combination of two divergent genomes during hybridization can result in "genome shock". Although genome shock has been reported in the hybrids of some herbaceous plants, the pattern and the principle it follows are far from understood, especially in woody plants. Here, the gene expression patterns were remodeled in the F1 hybrid from the crossing of Camellia azalea × Camellia amplexicaulis compared with the parents as revealed by RNA-seq. About 54.5% of all unigenes were differentially expressed between the F1 hybrid and at least one of the parents, including 6404 unigenes with the highest expression level in the F1 hybrid. A series of genes, related to flower development, essential for RNA-directed DNA methylation and histone methylation, as well as 223 transposable elements, were enriched; and most of them exhibited a higher level of expression in the F1 hybrid. These results indicated that the genome shock induced by interspecific hybridization in Camellia could indeed result in changes of gene expression patterns, potentially through regulating DNA methylation and histone methylation which may be helpful for the maintaining of genome stability and even related to the unique phenotype of the F1 hybrid.
journal_name
Genomejournal_title
Genomeauthors
Zhang M,Liu XK,Fan W,Yan DF,Zhong NS,Gao JY,Zhang WJdoi
10.1139/gen-2017-0105subject
Has Abstractpub_date
2018-07-01 00:00:00pages
477-485issue
7eissn
0831-2796issn
1480-3321journal_volume
61pub_type
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